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US5092612A - Contactless pressurizing-gas shaft seal - Google Patents

Contactless pressurizing-gas shaft seal Download PDF

Info

Publication number
US5092612A
US5092612A US07/491,664 US49166490A US5092612A US 5092612 A US5092612 A US 5092612A US 49166490 A US49166490 A US 49166490A US 5092612 A US5092612 A US 5092612A
Authority
US
United States
Prior art keywords
sealing ring
sealing
gap
stator
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/491,664
Other languages
English (en)
Inventor
Karl-Heinz Victor
Gustav Maser
Hans W. Laarmann
Ralf Dedeken
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Flowserve Dortmund GmbH and Co KG
Original Assignee
Pacific Wietz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pacific Wietz GmbH and Co KG filed Critical Pacific Wietz GmbH and Co KG
Assigned to PACIFIC WIETZ GMBH & CO. KG. reassignment PACIFIC WIETZ GMBH & CO. KG. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DEDEKEN, RALF, LAARMANN, HANS W., MASER, GUSTAV, VICTOR, KARL-HEINZ
Application granted granted Critical
Publication of US5092612A publication Critical patent/US5092612A/en
Priority to US07/971,150 priority Critical patent/US5368314A/en
Priority to US08/248,416 priority patent/US5435574A/en
Assigned to FLOWSERVE DORTMUND GMBH & CO. KG reassignment FLOWSERVE DORTMUND GMBH & CO. KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: PACIFIC WIETZ GMBH & CO. KG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities

Definitions

  • a gas-blocking contactless seal for a shaft can comprise a sealing housing surrounding the shaft, a stator seal ring disposed in the housing and a rotor sealing ring mounted on the shaft.
  • the temperature gradient in the axial direction can in such cases be 25° C. or more.
  • the torsional deformation of the stator sealing ring can detrimentally effect the seal formed during operation, can result in contact at inappropriate times between the sealing rings and can be disadvantageous for a variety of other reasons.
  • the dimensions of the mounting ring gap (mounting tolerance) and the ratio of the mounting ring gap to the functional gap under the various operating conditions cannot be related to the resetting in most instances because the temperature dependent deformation and the resetting which is dependent upon the operating state of the sealing arrangement do not occur simultaneously and both must occur under conditions that a contact of the sealing surface of the rotor and stator sealing rings does not occur.
  • O-ring of the conventional device should have a corresponding hardness, for example, a Shore A hardness of 90 or more in accordance with German Industrial Standards DIN 53505.
  • Another object of this invention is to provide a pressurized gas seal having a rotor sealing ring and a stator sealing ring and adapted to seal around a shaft which can avoid drawbacks of earlier systems and particularly the earlier systems described above.
  • the recesses or grooves on the juxtaposed sealing faces on the rotor and stator ring can be selected for optimal development of the gas pressure blocking the seal.
  • the recesses can be formed as gas-displacement spiral grooves. In this connection, however, it is possible to form the recesses or grooves as pressure generating recesses with damming edges.
  • the sealing rings can be composed of a variety of materials.
  • the sealing rings can be composed, for example, of a material selected from the group which consists of tungsten carbide, silicon carbide, silicon/silicon carbide composites, titanium carbide, Si 3 N 4 , Al 2 O 3 and ZrO 2 or combinations and mixtures thereof.
  • the stator sealing ring preferably can have an annular cross section whose ring height in the axial direction is at least twice the radial ring breadth.
  • the temperature gradient in the axial direction lies below 1.20 C. as compared to temperature gradients of 20° C. more with the prior art systems.
  • a sealing housing surrounding an axis
  • the shaft extending along the axis and surrounded by the housing, the shaft being rotatable relative to the housing, the sealing housing being formed with a cylindrical portion at a shaft side of the housing coaxially surrounding the shaft;
  • the gap width of the functional annular gap being less than 0.3 mm
  • FIG. 2 is an elevational view of the rotor sealing ring of FIG. 1;
  • FIG. 7 is a view similar to FIG. 6 illustrating another embodiment
  • FIG. 12 is a view of the end faces of the stator sealing ring of the embodiment of FIG. 11, illustrating a modification thereof;
  • the stator sealing ring 3 has a ring height 8 which is greater than the radial breath 9 of the sealing end face 3a and is movably mounted, i.e. can move radially within the mounting tolerance limit relative to the housing 2 and can be displaced axially by the spaces 7 or the pressure in the gap.
  • the sealing rings are composed of tungsten carbide, silicon carbide, silicon/silicon carbide composites, titanium carbide or combinations or mixtures thereof preferably of the same materials.
  • each of the recesses is symmetrical with respect to a line of symmetry in the form of a radium from the axis through the recess.
  • the resulting gas sealing arrangement is independent of the direction of rotation of the shaft.
  • the recesses 4 and 5 can open along the outer peripheral edge of the sealing end face 4a and can terminate at a dam 10 of the end face 4a which is formed by a portion of this end face free from recesses.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)
  • Sealing Devices (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Gasket Seals (AREA)
US07/491,664 1986-10-28 1990-03-09 Contactless pressurizing-gas shaft seal Expired - Lifetime US5092612A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US07/971,150 US5368314A (en) 1986-10-28 1992-11-03 Contactless pressurizing-gas shaft seal
US08/248,416 US5435574A (en) 1986-10-28 1994-05-24 Contactless pressurizing-gas shaft seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3636708 1986-10-28
DE3636708 1986-10-28

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11506387A Continuation-In-Part 1986-10-28 1987-10-28

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US62286690A Continuation-In-Part 1986-10-28 1990-12-05

Publications (1)

Publication Number Publication Date
US5092612A true US5092612A (en) 1992-03-03

Family

ID=6312675

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/491,664 Expired - Lifetime US5092612A (en) 1986-10-28 1990-03-09 Contactless pressurizing-gas shaft seal

Country Status (12)

Country Link
US (1) US5092612A (sv)
JP (1) JP2585635B2 (sv)
AT (1) AT395345B (sv)
BE (1) BE1001138A4 (sv)
CA (1) CA1336007C (sv)
CH (1) CH677266A5 (sv)
FR (1) FR2605703B1 (sv)
GB (1) GB2197396B (sv)
IT (1) IT1222990B (sv)
NL (1) NL190624C (sv)
NO (1) NO874439L (sv)
SE (1) SE466866B (sv)

Cited By (79)

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US5222743A (en) * 1991-02-15 1993-06-29 John Crane (Uk) Limited Mechanical face seal with trapezoidal shaped grooves on a sealing face
US5345829A (en) * 1990-04-23 1994-09-13 Tanken Seiko Kabushiki Kaisha Method for predicting abnormality of mechanical seal and apparatus for predicting same
US5368314A (en) * 1986-10-28 1994-11-29 Pacific Wietz Gmbh & Co. Kg Contactless pressurizing-gas shaft seal
WO1995006212A1 (en) * 1993-08-26 1995-03-02 Durametallic Corporation Face seal with double groove arrangement
WO1995006211A1 (en) * 1992-02-26 1995-03-02 Durametallic Corporation Grooved face seal
US5441283A (en) * 1993-08-03 1995-08-15 John Crane Inc. Non-contacting mechanical face seal
US5448924A (en) * 1992-04-15 1995-09-12 Tanken Seiko Kabushiki Kaisha System for monitoring behavior of rotary body
US5487550A (en) * 1991-11-12 1996-01-30 Bw/Ip International, Inc. Secondary gas/liquid mechanical seal assembly
US5492341A (en) * 1990-07-17 1996-02-20 John Crane Inc. Non-contacting, gap-type seal having a ring with a patterned seal face
US5496047A (en) * 1992-07-04 1996-03-05 John Crane Uk Limited Mechanical seal containing a sealing face with grooved regions which generate hydrodynamic lift between the sealing faces
US5529318A (en) * 1994-03-22 1996-06-25 Nippon Pillar Packing Co., Ltd. Non-contacting shaft sealing device
US5556111A (en) * 1993-09-01 1996-09-17 Durametallic Corporation Face seal with angled grooves and shallow annular groove
US5632435A (en) * 1992-05-27 1997-05-27 Sulzer-Escher Wyss Ag Process for the production of a soldered joint
US5722665A (en) * 1992-02-26 1998-03-03 Durametallic Corporation Spiral groove face seal
US6189896B1 (en) 1999-04-08 2001-02-20 Caterpillar Inc. Controlled leakage rotating seal ring with elements for receiving and holding a lubricant on a face thereof
EP1231419A2 (en) 2001-02-09 2002-08-14 Eagle Industry Co., Ltd. Shaft seal device
WO2002093046A1 (en) * 2001-05-15 2002-11-21 Aes Engineering Limited Mechanical seal
US6575470B1 (en) * 1998-12-10 2003-06-10 “ANGA” Uszczelnienia Mechanicznespokazoo Non-contacting face seals
US20030178781A1 (en) * 2002-03-19 2003-09-25 Eagle Industry Co., Ltd. Sliding element
US20030189294A1 (en) * 2002-04-02 2003-10-09 Eagle Industry Co., Ltd. Sliding element
EP1253359A3 (en) * 2001-04-26 2004-02-25 John Crane, Inc. Non-contacting gas compressor seal with reverse pressure capability
US20040232622A1 (en) * 2001-04-30 2004-11-25 Gozdawa Richard Julius Dry gas seal
US6848689B2 (en) * 1999-03-22 2005-02-01 Dresser-Rand Company Shaft seal
US20050212217A1 (en) * 2003-12-22 2005-09-29 Eagle Industry Co., Ltd. Sliding element
US20050263963A1 (en) * 2004-05-28 2005-12-01 Wei-Tang Lai Mechanical seal ring assembly with hydrodynamic pumping mechanism
US20070022873A1 (en) * 2005-07-26 2007-02-01 Honeywell International Inc. Wear-resistant port plate for a fluid transfer device and fluid transfer device including same
US20080088094A1 (en) * 2004-12-07 2008-04-17 The Timken Company Micro-Channel Seals
US20080128994A1 (en) * 2006-11-09 2008-06-05 Carl Freudenberg Kg Mechanical face seal, mechanical face seal arrangement and its use
US20080236170A1 (en) * 2007-03-27 2008-10-02 Siemens Power Generation, Inc. Transition-to turbine seal apparatus and transition-to-turbine seal junction of a gas turbine engine
KR100965978B1 (ko) 2004-08-27 2010-06-24 한국씰마스타주식회사 미케니컬 페이스 씰의 그루브패턴구조
US20130001884A1 (en) * 2009-12-25 2013-01-03 Leonid Borisovich Dobrolyubov Sealing (packing) ring
US20130209011A1 (en) * 2010-10-06 2013-08-15 Eagle Industry Co., Ltd. Sliding component
US20140117625A1 (en) * 2011-07-01 2014-05-01 John Francis Short Scooping hydrodynamic seal
US20140203517A1 (en) * 2013-01-23 2014-07-24 Flowserve Management Company Mechanical face seal with a reverse trapezoidal face pattern
US8960732B2 (en) 2012-02-28 2015-02-24 Toyota Motor Engineering & Manufacturing North America, Inc. Seal structure for translating member
US20150260292A1 (en) * 2013-01-16 2015-09-17 Eagle Industry Co., Ltd. Sliding component
US20150285132A1 (en) * 2012-05-31 2015-10-08 Borgwarner Inc. Actuator rod sealing system
US20160097456A1 (en) * 2014-10-06 2016-04-07 John Crane Group Corporation Mechanical seal with hydro-pad face profile
CN105840829A (zh) * 2016-04-11 2016-08-10 中国矿业大学 一种冲击旋转高压密封装置
CN105952900A (zh) * 2016-07-10 2016-09-21 西华大学 具有波形槽端面的密封环及机械密封装置
US9512923B2 (en) * 2012-05-21 2016-12-06 Eagle Industry Co., Ltd. Sliding component
US20170051620A1 (en) * 2014-03-26 2017-02-23 General Electric Company Individually compliant segments for split ring hydrodynamic face seal
US20170096905A1 (en) * 2013-05-16 2017-04-06 Dresser-Rand Sa Bi-directional shaft seal
US9657842B2 (en) * 2012-08-10 2017-05-23 Siemens Aktiengesellschaft Shaft seal arrangement
US9714712B2 (en) 2014-08-15 2017-07-25 Eaton Corporation Hydrodynamic mating ring with integrated groove inlet pressure control
JPWO2016072325A1 (ja) * 2014-11-08 2017-10-05 イーグル工業株式会社 摺動部品
US9964215B2 (en) * 2012-12-25 2018-05-08 Eagle Industry Co., Ltd. Sliding component
US10267421B2 (en) * 2013-09-27 2019-04-23 Kabushiki Kaisha Riken Seal ring
US10337619B2 (en) 2013-08-27 2019-07-02 Eaton Intelligent Power Limited Seal ring composite for improved hydrodynamic seal performance
US20200224768A1 (en) * 2017-10-03 2020-07-16 Eagle Industry Co., Ltd. Sliding component
CN113348308A (zh) * 2019-02-04 2021-09-03 伊格尔工业股份有限公司 滑动部件
US11125334B2 (en) 2016-12-21 2021-09-21 Eaton Intelligent Power Limited Hydrodynamic sealing component and assembly
US11168793B2 (en) 2017-05-19 2021-11-09 Eagle Industry Co., Ltd. Sliding component
US11187326B2 (en) * 2017-05-12 2021-11-30 Eagle Industry Co., Ltd. Mechanical seal
EP3816490A4 (en) * 2018-05-17 2022-03-02 Eagle Industry Co., Ltd. WATERTIGHT RING
CN114270080A (zh) * 2019-09-02 2022-04-01 伊格尔工业股份有限公司 滑动部件
US11320052B2 (en) 2018-02-01 2022-05-03 Eagle Industry Co., Ltd. Sliding components
US11391376B2 (en) 2016-08-15 2022-07-19 Eagle Industry Co., Ltd. Sliding component
US11525512B2 (en) 2018-05-17 2022-12-13 Eagle Industry Co., Ltd. Seal ring
US11603934B2 (en) 2018-01-12 2023-03-14 Eagle Industry Co., Ltd. Sliding component
US11608897B2 (en) 2018-08-01 2023-03-21 Eagle Industry Co., Ltd. Slide component
US11644100B2 (en) 2018-05-17 2023-05-09 Eagle Industry Co., Ltd. Seal ring
US20230258184A1 (en) * 2020-07-06 2023-08-17 Eagle Industry Co., Ltd. Sliding component
US20230258181A1 (en) * 2020-07-06 2023-08-17 Eagle Industry Co., Ltd. Sliding component
US11767916B2 (en) 2019-02-14 2023-09-26 Eagle Industry Co., Ltd. Sliding components
US11815184B2 (en) 2018-11-30 2023-11-14 Eagle Industry Co., Ltd. Sliding component
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US11821521B2 (en) 2018-12-21 2023-11-21 Eagle Industry Co., Ltd. Sliding component
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US11852241B2 (en) 2019-02-04 2023-12-26 Eagle Industry Co., Ltd. Sliding component
US11852244B2 (en) 2019-02-04 2023-12-26 Eagle Industry Co., Ltd. Sliding component and method of manufacturing sliding member
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US12018757B2 (en) 2019-02-04 2024-06-25 Eagle Industry Co., Ltd. Sliding components
US12049962B2 (en) 2019-02-04 2024-07-30 Eagle Industry Co., Ltd. Sliding component
US12104598B2 (en) 2020-07-06 2024-10-01 Eagle Industry Co., Ltd. Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms

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JPH06105105B2 (ja) * 1989-03-03 1994-12-21 日本ピラー工業株式会社 端面非接触形メカニカルシール
ATE106999T1 (de) * 1989-12-06 1994-06-15 Pacific Wietz Gmbh & Co Kg Gasgesperrte, kontaktlose dichtungsanordnung für eine welle.
US5066026A (en) * 1990-06-11 1991-11-19 Kaydon Corporation Gas face seal
US5090712A (en) * 1990-07-17 1992-02-25 John Crane Inc. Non-contacting, gap-type seal having a ring with a patterned microdam seal face
DE4123494C2 (de) * 1991-07-16 1995-02-23 Daimler Benz Ag Dichtungsvorrichtung
US5447316A (en) * 1992-02-06 1995-09-05 Eagle Industry Co., Ltd. Gas seal
US5501470A (en) * 1992-12-11 1996-03-26 Nippon Pillar Packing Co., Ltd. Non-contacting shaft sealing device with grooved face pattern
US6404220B1 (en) 1997-11-20 2002-06-11 Advantest Corporation IC testing method and IC testing device using the same
DE19782254T1 (de) 1997-12-02 2000-01-13 Advantest Corp Verfahren und Vorrichtung zur Strommessung auf der Basis von angelegter Spannung
SE513229C2 (sv) * 1998-12-04 2000-08-07 Mattsson Ab F M Med avstängningsventil och backventil försett ventilhus
JP2009250378A (ja) * 2008-04-08 2009-10-29 Eagle Ind Co Ltd 液体用のメカニカルシール装置
DE102009005386A1 (de) * 2009-01-21 2010-07-22 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladeeinrichtung für eine Brennkraftmaschine
CN110081173B (zh) * 2014-01-24 2021-04-30 Nok株式会社 密封圈
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Title
ASLE Education Course (review paper) Face Seals: Hydrostatic and Hydrodynamic: Dr. H. K. M ller, May 1972, Houston. *
ASLE Education Course (review paper) Face Seals: Hydrostatic and Hydrodynamic: Dr. H. K. Muller, May 1972, Houston.

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Also Published As

Publication number Publication date
IT1222990B (it) 1990-09-12
GB8725224D0 (en) 1987-12-02
FR2605703B1 (fr) 1990-06-08
NL8702511A (nl) 1988-05-16
GB2197396B (en) 1991-06-12
NL190624C (nl) 1994-05-16
NL190624B (nl) 1993-12-16
ATA275187A (de) 1992-04-15
JP2585635B2 (ja) 1997-02-26
NO874439D0 (no) 1987-10-26
SE8704144L (sv) 1988-04-29
NO874439L (no) 1988-04-29
IT8722413A0 (it) 1987-10-27
JPS63190975A (ja) 1988-08-08
CA1336007C (en) 1995-06-20
BE1001138A4 (fr) 1989-08-01
SE466866B (sv) 1992-04-13
CH677266A5 (sv) 1991-04-30
SE8704144D0 (sv) 1987-10-26
AT395345B (de) 1992-11-25
GB2197396A (en) 1988-05-18
FR2605703A1 (fr) 1988-04-29

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